There’s another part of it though. The subject is supposed to be attractive or desirable.
http://www.urbandictionary.com/define.php?term=hot%20mess
Drat! I’m foiled by the old multiple-meaning routine. I therefore officially withdraw my phrase “hot mess” to describe Hillary, and replace it with “corrupt, evil, and incompetent mess”.
I will, however, continue to describe my first girlfriend as a hot mess.